JP2002196836A - Electronic equipment device arranged with fingerprint reader and fingerprint reading and collating method using the same device and fingerprint reader arranged in the same device - Google Patents

Electronic equipment device arranged with fingerprint reader and fingerprint reading and collating method using the same device and fingerprint reader arranged in the same device

Info

Publication number
JP2002196836A
JP2002196836A JP2000393736A JP2000393736A JP2002196836A JP 2002196836 A JP2002196836 A JP 2002196836A JP 2000393736 A JP2000393736 A JP 2000393736A JP 2000393736 A JP2000393736 A JP 2000393736A JP 2002196836 A JP2002196836 A JP 2002196836A
Authority
JP
Japan
Prior art keywords
fingerprint
electronic
digital camera
reader
fingerprint reader
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2000393736A
Other languages
Japanese (ja)
Inventor
Shoichi Kiyomoto
尚一 清本
Original Assignee
Io Network:Kk
有限会社イオネットワーク
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Io Network:Kk, 有限会社イオネットワーク filed Critical Io Network:Kk
Priority to JP2000393736A priority Critical patent/JP2002196836A/en
Publication of JP2002196836A publication Critical patent/JP2002196836A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K9/00Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
    • G06K9/00006Acquiring or recognising fingerprints or palmprints
    • G06K9/00013Image acquisition
    • G06K9/00046Image acquisition by using geometrical optics, e.g. using prisms
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K9/00Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
    • G06K9/00006Acquiring or recognising fingerprints or palmprints
    • G06K9/00087Matching; Classification
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07CTIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00Individual registration on entry or exit
    • G07C9/30Individual registration on entry or exit not involving the use of a pass
    • G07C9/32Individual registration on entry or exit not involving the use of a pass in combination with an identity check
    • G07C9/37Individual registration on entry or exit not involving the use of a pass in combination with an identity check using biometric data, e.g. fingerprints, iris scans or voice recognition

Abstract

PROBLEM TO BE SOLVED: To realize a compact and light fingerprint reading environment whose low costs impose no burden on the user of electronic equipment such as a mobile terminal or a portable telephone set, and to realize personal identification based on fingerprints by using an already incorporated function. SOLUTION: In this electronic equipment device on which a digital camera mechanism 21 is mounted, a fingerprint reader 5 equipped with an accessory lens system 25 inside is arranged in front of the digital camera mechanism 21 so that a coaxial optical system can be formed of both the accessory lens system 25 and the digital camera mechanism 21. Also, it is possible to provide a fingerprint reading and collating method using this electronic equipment device and a finger print reader arranged in this device.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【0001】[0001]
【発明が属する技術分野】この発明は、電子機器装置を
使用するに際して本人確認のための指紋読取り装置を配
備した電子機器装置並びに該装置を利用した指紋読取
り、照合方法及びこの装置に配備する指紋読取り装置に
関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device equipped with a fingerprint reader for confirming the identity of the user when using the electronic device, a fingerprint reading and collating method using the device, and a fingerprint provided in the device. It relates to a reader.
【0002】[0002]
【従来の技術】近年、モバイルコンピューティングに代
表される計算機や携帯電話機を経由したデータの通信サ
ービス、情報提供サービスが急増しているが、その一方
で電子機器の紛失や盗難による貴重なデータ等の不正利
用に係わるトラブルが多発することが予想される。
2. Description of the Related Art In recent years, data communication services and information providing services via computers and mobile phones typified by mobile computing have been rapidly increasing, but on the other hand, valuable data due to loss or theft of electronic devices and the like. It is anticipated that troubles related to unauthorized use of this will frequently occur.
【0003】これらのトラブルを防ぐために本人確認手
段として、図5にその概要を示すようにプリズムを用い
たもの(特開平10-326338号公報)、指の静電容量、体
温又は圧力等を受感する半導体センサーを用いた指紋の
読取り装置が知られており、これらの指紋の読取り装置
を組み込むことにより電子機器の本人確認機能を高める
ことが期待される。
In order to prevent these troubles, a means using a prism as shown in FIG. 5 (Japanese Patent Laid-Open No. 10-326338) as a means for verifying the identity, receives the capacitance of the finger, body temperature or pressure, etc. Fingerprint readers using a semiconductor sensor that can be sensed are known, and it is expected that incorporating these fingerprint readers will enhance the personal identification function of electronic devices.
【0004】一方、モバイル端末や携帯電話機等の電子
機器の市場は、現在小型、軽量化に興味の重点が置かれ
ると同時に、その広範な普及のためにより低価格化が重
要なテーマである。
On the other hand, in the market for electronic devices such as mobile terminals and portable telephones, attention is currently focused on miniaturization and weight reduction, and at the same time, lowering the price is an important theme for its widespread use.
【0005】[0005]
【発明が解決しようとする課題】モバイル端末や携帯電
話機等の電子機器の利用者にとって負担にならない低価
格、小型で軽量な指紋読取り環境を実現すると共に、そ
れらに既に備わっている機能を用いて指紋による本人確
認を実現する必要があるが、この点前述の指紋読取り装
置は何れも、未だ低価格、小型、軽量化には程遠く、こ
れらの電子機器に取り込むに値するものはない。
The present invention realizes a low-cost, small-sized, and lightweight fingerprint reading environment that does not burden users of electronic devices such as mobile terminals and mobile phones, and uses functions already provided in these devices. It is necessary to realize identity verification using a fingerprint, but in this regard, none of the above-mentioned fingerprint readers are far from low-priced, small-sized, and light-weight, and there is nothing worthy of incorporating in these electronic devices.
【0006】例えば、図5に示されるような光学式指紋
読取り装置の全体を電子機器に組込むことは大きさの点
で不可能である。
For example, it is impossible to incorporate the entire optical fingerprint reader as shown in FIG.
【0007】また、この指紋読取り装置に備わっている
光受感素子部(イメージャーと呼ぶ)及びそれに係わる
部材は数千円することからコスト的に負担となり、更に
光以外の指紋センシング半導体も同様で現在、そのセン
サーだけでも数千円のオーダーであり、低価格化が要求
される携帯電話機に装備させるにはコスト的な負担が大
きすぎる。
Further, the light-sensitive element portion (referred to as an imager) provided in the fingerprint reader and members related thereto are costly because they cost several thousand yen, and the fingerprint sensing semiconductors other than light are similarly charged. At present, the cost of the sensor alone is on the order of several thousand yen, and the cost burden is too large to be mounted on a mobile phone that requires a low price.
【0008】これに対して最近図1に示すようなデジタ
ルカメラ機能を装備した電子機器装置が市販されている
が、この電子機器においてデジタルカメラは一般に図6
に示すように、一般にイメージャーと呼ばれる光受感部
16とカメラレンズ系15とから構成され、図中の点C及び
線分ABがイメージャーの中心とサイズをそれぞれ表すと
し、ABの長さは数mmのオーダーであり、図中で点Dをカ
メラレンズ系の焦点距離14とすると、角ADBをカメラレ
ンズ系の画角又は視角と呼ばれ、画角が60度以上のもの
を広角と呼ぶが、一般に電子機器に内蔵されているデジ
タルカメラ機能は、イメージャーが小型であるため焦点
距離が10mm弱の超小型レンズ系により広角領域から望遠
までカバーすることができるように設計されている。
On the other hand, recently, an electronic apparatus equipped with a digital camera function as shown in FIG. 1 is commercially available. In this electronic apparatus, a digital camera is generally used as shown in FIG.
As shown in the figure, the light receiving part generally called an imager
16 and the camera lens system 15, and the point C and the line segment AB in the figure represent the center and size of the imager, respectively.The length of AB is on the order of several mm, and the point D in the figure is Assuming that the focal length of the camera lens system is 14, the angle ADB is called the angle of view or viewing angle of the camera lens system, and those with an angle of view of 60 degrees or more are called wide angles. Is designed so that it can cover from wide-angle to telephoto with an ultra-small lens system with a focal length of less than 10 mm because the imager is small.
【0009】これに対し、本願の目的である指紋を高解
像度(1mm当り約20本)、高コントラスト(256階調)で
読取るためには、前述のカメラレンズ系よりも更に短い
焦点距離を実現することが必要となる。
On the other hand, in order to read fingerprints with high resolution (about 20 lines per mm) and high contrast (256 gradations), which is the object of the present invention, a shorter focal length than the above-described camera lens system is realized. It is necessary to do.
【0010】これは、図7に示すように人の遠視眼を矯
正するための遠視眼鏡を追加することにより、全体とし
て目に近いものを鮮明に見せることと類似方法により実
現することができる。
[0010] This can be realized by a method similar to that in which a person who is close to the eyes looks sharp as a whole by adding far-sighted glasses for correcting the far-sighted eyes of a person as shown in FIG.
【0011】即ち、無限遠からの平行光線が水晶体17の
みでは所定の網膜18上に結像できず(図中の点線)、遠
視眼鏡に当たる追加凸レンズ19を付加することにより網
膜上に像(眼球20内の実線)を結ばせることに相当す
る。
That is, a parallel ray from infinity cannot be imaged on a predetermined retina 18 only by the crystalline lens 17 (dotted line in the figure), and an image (eyeball 20 (Solid line inside).
【0012】[0012]
【課題を解決するための手段】この発明は、上記知見に
基づいて、デジタルカメラ機構を装備した電子機器装置
において、内部に付属レンズ系を設けた指紋読取り補助
装置を、該付属レンズ系を上記デジタルカメラ機構と共
軸の光学系を形成するようにデジタルカメラ機構の前に
配した電子機器装置並びにこの装置を利用した指紋読取
り、照合方法及びこの装置に配備する指紋読取り補助装
置を提案するものである。
According to the present invention, based on the above findings, in an electronic apparatus equipped with a digital camera mechanism, a fingerprint reading auxiliary device having an attached lens system therein is provided. An electronic device disposed in front of a digital camera mechanism so as to form a coaxial optical system with the digital camera mechanism, a fingerprint reading and collating method using the device, and a fingerprint reading auxiliary device provided in the device. It is.
【0013】[0013]
【発明の実施の形態】即ち、図2に示すように、モバイ
ル端末や携帯電話機等の電子機器8には受感部7、集光
部6を備えたデジタルカメラ機構21が装備されている
が、この発明では内部に前述の遠視眼鏡を構成する付属
レンズ系25を設けた指紋読取り装置5を、付属レンズ系
25がデジタルカメラ機構21と共軸な光学系を形成するよ
うに光受感部7、集光部8を備えたデジタルカメラ機構
21部の前に配するものである。
DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 2, an electronic device 8 such as a mobile terminal or a portable telephone is equipped with a digital camera mechanism 21 having a sensing portion 7 and a light collecting portion 6. According to the present invention, the fingerprint reader 5 provided with the attached lens system 25 constituting the above-mentioned hyperopic glasses is provided with the attached lens system.
A digital camera mechanism provided with a light sensing unit 7 and a condensing unit 8 so that 25 forms a coaxial optical system with the digital camera mechanism 21
It is arranged before 21 copies.
【0014】この発明によれば、指紋読取り装置5の指
押し当て部4に指3を押し当てることにより、デジタル
カメラ機構21を用いて指紋照合に必要な精度で指紋を読
取ることができる。
According to the present invention, by pressing the finger 3 against the finger pressing portion 4 of the fingerprint reading device 5, the digital camera mechanism 21 can be used to read the fingerprint with the accuracy required for fingerprint collation.
【0015】読取られた画像データは電子機器の記憶装
置に記憶し、即時に本人確認のために指紋照合をした
り、或は電子機器の通信機能を使用し、指紋照合のため
のセンターに画像データ又はこの画像データより抽出さ
れた指紋の特徴データを送信し、本人確認を可能にす
る。
The read image data is stored in a storage device of the electronic device, and the fingerprint is collated immediately for identity verification, or the image is sent to a center for fingerprint collation using the communication function of the electronic device. The data or the characteristic data of the fingerprint extracted from the image data is transmitted to enable the identification.
【0016】したがって、この発明によれば電子機器及
びそれによりアクセス可能なデータの正当な利用者であ
ることの確認は勿論、モバイル端末や携帯電話機を経由
したデータの通信サービス、情報提供サービス等の商用
サービスの正当な使用者であるか否かの判定や、利用者
への課金等の安全性の向上に有効である。
Therefore, according to the present invention, it is possible to confirm not only that the user is a valid user of the electronic device and the data that can be accessed by the electronic device, but also that the data communication service via the mobile terminal or the mobile phone, the information providing service, etc. This is effective for determining whether or not the user is a legitimate user of the commercial service, and for improving security such as charging the user.
【0017】[0017]
【実施例】以下、この発明を図示の実施例を詳細に説明
すると、読取られた指紋パターンの十分なコントラスト
と解像度を得るためには、内部にプリズム又は針孔写真
の原理に基づいた針孔板を備えた指紋読取り装置を使用
することができる。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings. In order to obtain a sufficient contrast and resolution of a read fingerprint pattern, a prism or a needle hole based on the principle of a needle hole photograph is provided inside. A fingerprint reader with a plate can be used.
【0018】図3は、内部にプリズムを備えた指紋読取
り装置5を使用した例を示すものであり、指紋読取り装
置5内には前述の遠視眼鏡を構成する付属レンズ系25、
プリズム24、画像の明るさを保証するための補助光源23
が設けられ、電子機器に装備されたデジタルカメラ機構
21内にはイメージャー面26の前方にカメラレンズ系22が
設けられ、指紋読取り装置5はデジタルカメラ機構21に
共軸な光学系を形成するようにデジタルカメラ機構21の
前に配置される。
FIG. 3 shows an example in which a fingerprint reader 5 having a prism therein is used. In the fingerprint reader 5, an accessory lens system 25 constituting the above-mentioned far-sighted glasses,
Prism 24, auxiliary light source 23 to guarantee image brightness
Digital camera mechanism equipped with electronic equipment
A camera lens system 22 is provided in the front of the imager surface 26 in the inside 21, and the fingerprint reader 5 is arranged in front of the digital camera mechanism 21 so as to form a coaxial optical system with the digital camera mechanism 21.
【0019】なお、付属レンズ系25は、収差の影響を軽
減するために、非球面レンズをもちいることもでき、勿
論指紋読取り装置5の鏡筒にネジを施し、鏡筒の距離を
可変にして、ピント合わせ可能にすることもできる。
The attached lens system 25 may use an aspherical lens in order to reduce the influence of aberration. Of course, the lens barrel of the fingerprint reader 5 is screwed to change the distance between the lens barrels. It is also possible to make focus possible.
【0020】図3.Aの補助光源23に必要な電源供給方
法としては、指紋読取り装置5内に電池を用意する方
法、指紋を読取る行為が生起した時のみ、電子機器側か
ら同期して電源を供給するようにして電力消費を節約す
ることも考えられ、更には指押し当て部に発光性高分子
を配置し、これに電極を接続し、指が接触した際に発光
するようにすることもできる。
FIG. As a power supply method required for the auxiliary light source 23 of A, a method of preparing a battery in the fingerprint reader 5 and a method of supplying power synchronously from the electronic device side only when a fingerprint reading action occurs. It is conceivable to save power consumption, and it is also possible to arrange a luminescent polymer at the finger pressing portion and connect an electrode to the luminescent polymer so as to emit light when a finger contacts.
【0021】更には、図3.Bに示すようにプリズム24
に太陽光を含む外光を採り入れる例えばアクリル製等の
透明材質で構成される採光窓23aを、外部を遮光された
指紋読取り装置5に設けて光源に消費する電力を節約す
るようにしてもよい。この場合図3.Bに示すような遮
光板28を設けてプリズムからの透過光のみを付属レンズ
系25に入れるようにしてもよい。
FIG. Prism 24 as shown in B
A lighting window 23a made of, for example, a transparent material such as acrylic, which receives external light including sunlight, may be provided in the fingerprint reader 5 whose outside is shielded from light to save power consumed by the light source. . In this case, FIG. A light shielding plate 28 as shown in B may be provided so that only the transmitted light from the prism enters the attached lens system 25.
【0022】図4は、指紋画像の解像度を高めるために
古くから知られた針孔写真の原理を用いた場合の一実施
例であり、この実施例では複数の補助光源23からの光が
針孔板27を直接透過しないように遮光板28を設け、指か
らの反射光のみを付属レンズ系25に当たるようにして十
分な解像度を実現している。
FIG. 4 shows an embodiment in which the principle of a needle hole photograph known for a long time is used to enhance the resolution of a fingerprint image. In this embodiment, light from a plurality of auxiliary light sources 23 A light-shielding plate 28 is provided so as not to directly pass through the aperture plate 27, and only reflected light from a finger is applied to the attached lens system 25 to realize a sufficient resolution.
【0023】なお、読取られた指紋パターンの十分なコ
ントラストを得るためには、押し当て部4に和紙等の紙
材、或はポリエチレン、ポリプロピレン、ポリエチレン
テレフタレート等の結晶性高分子やポリスチレン、ポリ
塩化ビニル、ポリエステル、ポリカーボネート等の非結
晶性高分子フィルム等で構成される半透明薄膜を配置す
ることができる。
In order to obtain a sufficient contrast of the read fingerprint pattern, a paper material such as Japanese paper, a crystalline polymer such as polyethylene, polypropylene, polyethylene terephthalate, polystyrene, or polychlorinated A translucent thin film composed of a non-crystalline polymer film of vinyl, polyester, polycarbonate or the like can be arranged.
【0024】また、プリズム24の表面の指押し当て部4
に乾燥した指紋対策として吸着性の粘弾性を有するシリ
コン或はウレタンゴム等により構成される密着性膜を施
すことができる。
The finger pressing portion 4 on the surface of the prism 24
As a countermeasure against dry fingerprints, an adhesive film made of silicon or urethane rubber having adsorptive viscoelasticity can be applied.
【0025】なお、以上の実施例に挙げた方法により得
られた指紋画像は、図3に示すようなイメージャーを含
めて設計された光学系により得られる画像に比べて画角
の外周部分での画質の劣化は否めない。
It should be noted that the fingerprint image obtained by the method described in the above-described embodiment has an outer peripheral portion of the angle of view which is smaller than an image obtained by an optical system designed including an imager as shown in FIG. The image quality cannot be degraded.
【0026】この画質の劣化は、指紋読取り装置の設計
に依存するが、コントラスト、解像度又は歪の何れかに
影響が及ぶ。
This degradation of image quality depends on the design of the fingerprint reader, but affects any one of contrast, resolution and distortion.
【0027】具体的な例として、図8に示すように(A)
の理想的な画像採取パターンに対してこの発明に係る装
置から得られる画像採取パターンは(B)に示すように、
コントラスト、解像度の両面で画像が劣化し得る。しか
も、図中の第1層、第2層更には第3層と画像の外周に行
くほど劣化が増幅されるのが一般的である。
As a specific example, as shown in FIG.
The image acquisition pattern obtained from the apparatus according to the present invention with respect to the ideal image acquisition pattern of
The image may deteriorate in both contrast and resolution. In addition, the deterioration is generally amplified in the first layer, the second layer, and further the third layer in the figure and toward the outer periphery of the image.
【0028】これは、指紋の特徴抽出段階、照合段階で
考慮される「指の置き方」や「指の質と状態(指紋の摩
耗や病気等)」等の付帯事項と共通するが(特願平10-3
56681号、特願平11-53728号)、常時発現する事象であ
れば事前に考慮すべきであるし、その処理も可能であ
る。
This is common to incidental matters such as “how to place a finger” and “finger quality and condition (fingerprint wear and disease, etc.)” that are considered in the fingerprint feature extraction and collation stages. 10-3
No. 56681, Japanese Patent Application No. 11-53728), events that always occur should be considered in advance, and their processing is also possible.
【0029】この問題は、電気的に、電子機器から、指
紋の正確な押捺を指示する信号を発し、行為を促す方法
により達成することもでき、或は指紋読取り装置を正し
く電子機器に装着せしめるように電子機器側にマークや
構造を装備することも補助的な効果をもたらす。
This problem can be solved by a method of prompting an action by electrically issuing a signal for instructing accurate fingerprinting from an electronic device, or by properly mounting a fingerprint reader on the electronic device. Equipped with a mark or a structure on the electronic device side also has an auxiliary effect.
【0030】一方、この問題は、画像処理の段階でソフ
トウエア的に次のようにして補完できる。
On the other hand, this problem can be complemented by software at the stage of image processing as follows.
【0031】図8に示される通り、理想的な画像採取パ
ターン(図8.A)に対して図8.Bに示されるような劣
化はこの発明に係る指紋読取り装置が設計された段階で
正確な2次元のデータとして数値化される。
As shown in FIG. 8, FIG. 8 shows an ideal image acquisition pattern (FIG. 8.A). The deterioration as shown in B is quantified as accurate two-dimensional data when the fingerprint reader according to the present invention is designed.
【0032】仮にこれをF(x,y)と表し、例えば読
取ろうとする指紋画像をG(x,y)とすると、劣化を受
けた画像G’(x,y)は、フーリエ変換での「たたみ
込み」*を用いて次式で表すことができる。
If this is represented as F (x, y) and, for example, the fingerprint image to be read is G (x, y), the deteriorated image G ′ (x, y) is represented by “F (x, y)” in the Fourier transform. It can be expressed by the following equation using “convolution” *.
【0033】 G’(x,y)=F(x,y)*G(x,y) (1)G ′ (x, y) = F (x, y) * G (x, y) (1)
【0034】このことから、事前にF(x,y)が判っ
ていれば、読取られる画像 G’(x,y)から元の正し
い画像G(x,y)は次式で求めることができる。
From this, if F (x, y) is known in advance, the original correct image G (x, y) can be obtained from the read image G '(x, y) by the following equation. .
【0035】[0035]
【数1】 (Equation 1)
【0036】以上の関係を用いて図9に示す通り、指紋
読取り装置の段階又は製品段階で得られる画像劣化特性
F(x,y)に予め記憶し(工程34)、指紋読取り装置2
1を介してデジタルカメラ(DC.と表記)から読取られ
た指紋画像 G’(x,y)を入力し、この指紋画像を前
記の(2)式に従った処理(画像前処理)回路33から、
理想的な指紋画像G(x,y)を求め、この指紋画像を
使用すれば工程35以降の指紋照合処理が可能となる。
Using the above relationship, as shown in FIG. 9, the image deterioration characteristics obtained at the stage of the fingerprint reader or at the stage of the product.
F (x, y) is stored in advance (step 34), and the fingerprint reader 2
The fingerprint image G '(x, y) read from the digital camera (indicated as DC.) Is inputted via the digital camera 1 and the fingerprint image is processed (image pre-processing) circuit 33 according to the above equation (2). From
An ideal fingerprint image G (x, y) is obtained, and if this fingerprint image is used, the fingerprint collation processing in step 35 and thereafter can be performed.
【0037】なお、前記の計算をより簡便に実施するに
は、有効画角(前記の所定の解像度及びコントラストを
満たす領域)として、劣化がひどく指紋照合にふさわし
くない外周の画像情報を処理対象から外す処理過程33を
デジタルカメラ用画像前処理として実施する方法もあ
る。
In order to carry out the above calculation more simply, as the effective angle of view (the area satisfying the above-mentioned predetermined resolution and contrast), image information on the outer periphery which is so deteriorated that it is not suitable for fingerprint collation is to be processed. There is also a method of implementing the removing process 33 as image preprocessing for a digital camera.
【0038】即ち、事前に考慮すべき指紋読取り装置の
属性情報として例えば図8.Bの第3層を予め記憶装置に
記憶し(工程34)、必要な際に読み出して前記画像前処
理として画像の第3層及びその外角をマスク(無効)と
し、得られた指紋画像により工程35以降の指紋照合処理
が可能となる。
That is, as the attribute information of the fingerprint reader to be considered in advance, for example, FIG. The third layer of B is stored in a storage device in advance (step 34), read out when necessary, and the third layer of the image and its outer corners are masked (invalid) as the image preprocessing, and the process is performed using the obtained fingerprint image. Fingerprint collation processing after 35 is possible.
【0039】その後は指紋画像処理回路33で指紋画像を
処理し、指紋の特徴抽出回路36で指紋の特徴を抽出し、
抽出された指紋の特徴と登録済み指紋データ38を指紋照
合判定回路37で比較照合して本人確認を行うのである。
Thereafter, the fingerprint image is processed by the fingerprint image processing circuit 33, and the fingerprint features are extracted by the fingerprint feature extraction circuit 36.
The fingerprint characteristics extracted and the registered fingerprint data 38 are compared and collated by the fingerprint collation judging circuit 37 to confirm the identity.
【0040】前記のように採取された画像を指紋照合の
前段階で事前に処理する方法以外に、図10に示すように
デジタルカメラを使用して採取した場合にはデジタルカ
メラ用の登録用指紋データ41を通常の指紋読取り装置か
ら入力される画像から特徴抽出されて生成された登録指
紋データ38と区分して別に用意し、この発明に係る指紋
読取り装置を使用した場合、その旨を工程39より工程40
を経由して、照合回路37に事前に通知し、DC.から採取
した指紋を同上の照合回路37で照合比較することも考え
られる。
In addition to the method of pre-processing the collected image at the stage before the fingerprint collation as described above, when the image is collected using a digital camera as shown in FIG. 10, the registration fingerprint for the digital camera is used. The data 41 is separately prepared from the registered fingerprint data 38 generated by extracting the feature from the image input from the normal fingerprint reader, and separately prepared. When the fingerprint reader according to the present invention is used, the fact is described in step 39. More process 40
Is notified to the matching circuit 37 in advance via DC. It is also conceivable to compare and compare fingerprints collected from the same by the matching circuit 37 of the above.
【0041】[0041]
【発明の効果】以上要するに、この発明によればモバイ
ル端末や携帯電話機等の電子機器の利用者にとって負担
にならない低価格で、且つ小型で軽量な指紋読取り環境
を実現すると共に、それらに既に備わっている機能を用
いて指紋による本人確認を実現することができる。
In summary, according to the present invention, a low-cost, small-sized and light-weight fingerprint reading environment which does not burden users of electronic devices such as mobile terminals and portable telephones is provided, and is already provided in them. It is possible to realize the identity verification by the fingerprint by using the function.
【図面の簡単な説明】[Brief description of the drawings]
【図1】デジタルカメラ機構を装備した電子機器装置の
斜視図
FIG. 1 is a perspective view of an electronic apparatus equipped with a digital camera mechanism.
【図2】同上のデジタルカメラ機構に指紋読取り装置を
取り付けて指紋読取りを行う概念図
FIG. 2 is a conceptual diagram of performing fingerprint reading by attaching a fingerprint reader to the digital camera mechanism according to the first embodiment;
【図3】 プリズムを用いた指紋読取り装置による指紋読
取りの実施例を示す図で、(A)はプリズムに電気的に
発光する補助光源を設けた場合、(B)は指紋読取り装
置の外部を遮光して当該プリズムを外光により照射する
ための採光窓とプリズムを透過しない直射光をカットす
るための遮光板を設けた場合を夫々示す図
3A and 3B are diagrams illustrating an example of fingerprint reading by a fingerprint reader using a prism, wherein FIG. 3A illustrates a case where an auxiliary light source that electrically emits light is provided in a prism, and FIG. FIGS. 3A and 3B respectively show a light-shielding window for shielding light and irradiating the prism with external light and a light-shielding plate for cutting direct light that does not pass through the prism; FIGS.
【図4】 針孔板を用いた指紋読取り装置による指紋読取
りの説明図
FIG. 4 is an explanatory diagram of fingerprint reading by a fingerprint reader using a needle hole plate.
【図5】 従来の光学式指紋読取り装置の説明図FIG. 5 is an explanatory view of a conventional optical fingerprint reader.
【図6】 電子機器に装備されるデジタルカメラの光学系
機構の原理説明図
FIG. 6 is a diagram illustrating the principle of an optical system mechanism of a digital camera provided in an electronic device.
【図7】 人の遠視眼鏡の原理説明図FIG. 7 is a diagram illustrating the principle of human hyperopic glasses.
【図8】 この発明に係る指紋読取り装置を通して得られ
る画像の劣化を模式的に表す図で、(A)は図3に示され
る装置を使用して得られた理想的な画像採取パターン、
(B)はこの発明により得られた画像採取パターン
FIG. 8 is a diagram schematically showing deterioration of an image obtained through the fingerprint reader according to the present invention, where (A) is an ideal image collection pattern obtained by using the apparatus shown in FIG. 3,
(B) is an image collection pattern obtained by the present invention.
【図9】 この発明による読取り指紋画像の処理及び指
紋照合処理過程の一例を示すブロック図
FIG. 9 is a block diagram showing an example of a process of reading a fingerprint image and a fingerprint matching process according to the present invention;
【図10】 この発明による読取り指紋画像の処理及び指
紋照合処理過程の他の一例を示すブロック図
FIG. 10 is a block diagram showing another example of the processing of the read fingerprint image and the fingerprint collation processing according to the present invention.

Claims (8)

    【特許請求の範囲】[Claims]
  1. 【請求項1】 デジタルカメラ機構を装備した電子機器
    装置において、内部に付属レンズ系を設けた指紋読取り
    装置を、該付属レンズ系が上記デジタルカメラ機構と共
    軸の光学系を形成するようにデジタルカメラ機構の前に
    配したことを特徴とする電子機器装置。
    1. An electronic apparatus equipped with a digital camera mechanism, comprising: a fingerprint reader having an attached lens system provided therein, wherein the attached lens system forms a coaxial optical system with the digital camera mechanism. An electronic device, wherein the electronic device is disposed in front of a camera mechanism.
  2. 【請求項2】 内部にプリズム又は針孔板を備えた指紋
    読取り装置を使用する請求項1記載の電子機器装置。
    2. The electronic apparatus according to claim 1, wherein a fingerprint reader having a prism or a needle hole plate therein is used.
  3. 【請求項3】 半透性薄膜を施した指押し当て部を備え
    た指紋読取り装置を使用する請求項1記載の電子機器装
    置。
    3. The electronic apparatus according to claim 1, wherein a fingerprint reader having a finger pressing unit provided with a semipermeable thin film is used.
  4. 【請求項4】 内部に照明用光源を備えた指紋読取り装
    置を使用する請求項1記載の電子機器装置。
    4. The electronic apparatus according to claim 1, wherein a fingerprint reader having a light source for illumination therein is used.
  5. 【請求項5】 指紋の凸部が触れる際に発光する機能を
    備えた高分子膜を指押し当て部を備えた紋読取り装置を
    使用する請求項1記載の電子機器装置。
    5. The electronic apparatus according to claim 1, wherein the fingerprint reading device includes a finger pressing portion of a polymer film having a function of emitting light when the convex portion of the fingerprint touches.
  6. 【請求項6】 請求項2記載のプリズムに太陽光を含む外
    光を取り入れる採光窓を備えた請求項1記載の電子機器
    装置。
    6. The electronic apparatus according to claim 1, further comprising a lighting window for taking in external light including sunlight into the prism according to claim 2.
  7. 【請求項7】 請求項1記載の電子機器装置を利用した指
    紋読取り、照合方法において、指紋読取り装置を介して
    デジタルカメラ機構から読取られた指紋画像を入力後、
    デジタルカメラ用画像前処理して登録済み指紋データと
    比較照合する方法。
    7. A fingerprint reading and collating method using an electronic device according to claim 1, wherein after inputting a fingerprint image read from a digital camera mechanism via a fingerprint reader,
    Digital camera image pre-processing and comparison with registered fingerprint data.
  8. 【請求項8】デジタルカメラ機構を装備した電子機器装
    置に配備される内部に付属レンズ系を設けた指紋読取り
    装置
    8. A fingerprint reader having an attached lens system provided inside an electronic apparatus equipped with a digital camera mechanism.
JP2000393736A 2000-12-25 2000-12-25 Electronic equipment device arranged with fingerprint reader and fingerprint reading and collating method using the same device and fingerprint reader arranged in the same device Pending JP2002196836A (en)

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JP2000393736A JP2002196836A (en) 2000-12-25 2000-12-25 Electronic equipment device arranged with fingerprint reader and fingerprint reading and collating method using the same device and fingerprint reader arranged in the same device
US10/029,613 US20020083329A1 (en) 2000-12-25 2001-12-21 Fingerprint reading security system in an electronic device

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